Precision mixing and dispensing for miniaturisation on medical devices and electronics

Continuing trends to miniaturisation call for smaller, more precise and ever more repeatable metering, mixing and dispensing units for two-part materials. Intertronics offer the preeflow eco-duo330, which offers micro-dosing for two component systems and can provide dosages as small as 0.2 to 32ml/min with complete repeatability, precisely mixed and with exceptional control. This is expected to be of value in the fields of medical device manufacturing, optics, photonics, electronics assembly, biochemistry and semi-conductors, where the ability to meter and mix small volumes will be appreciated.

With the eco-DUO330, dosing quantities of 0.005 ml (per shot) is achievable, irrespective of temperature, time, pressure and viscosity – dosed as a dot or bead – so the smallest quantities can be created as required. The microprocessor-controlled system creates a dosing accuracy of ±1 per cent and repeatability of over 99 per cent. Dependent on application, the mixture ratio between the two input materials can be easily adjusted from 1:1 to 10:1 using the intelligent control via a graphical interface. The dosing of dots, as well as bead applications, can be subjected to a continuous quality check thanks to the integrated pressure monitoring. The maximum continuous bead application is 6.6ml/min, whereas a variable bead thickness from 0.1mm to approximately 2mm (directly proportional to the speed of the application) is now achievable.

The preeflow eco-DUO330 is a volumetric dispensing system with self-sealing rotor-stator arrangement whereby controlled rotary motion transfers the medium by positive displacement in the stator. The medium is subject to very low stress and therefore unchanged by this process, and simply by switching to reverse-flow, preeflow ensures a clean and controlled stop of material or medium with no drips and no mess.